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Number of 7Xn 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1

%I #4 Apr 05 2018 09:57:02

%S 64,2785,18093,96956,659949,5542827,45861206,349722102,2638308693,

%T 20632095349,164488042149,1300817850933,10197522707272,80099391561538,

%U 632617365948810,5003985236582103,39530523959312891,312110835328722115

%N Number of 7Xn 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Row 7 of A302322.

%H R. H. Hardin, <a href="/A302328/b302328.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0..0..0..1..0. .0..0..0..1..0. .0..0..0..1..1. .0..0..0..0..1

%e ..1..1..1..1..0. .1..0..1..1..1. .0..1..0..1..0. .0..1..0..1..1

%e ..0..1..0..0..1. .0..0..0..0..0. .0..1..0..1..0. .1..1..0..1..0

%e ..0..1..0..1..0. .1..1..1..0..1. .1..1..0..1..0. .0..0..0..0..1

%e ..1..0..1..1..0. .1..0..1..0..1. .0..0..0..1..0. .1..1..0..1..1

%e ..0..0..0..1..0. .0..1..1..0..1. .1..1..0..1..0. .0..1..0..1..0

%e ..0..1..0..1..1. .0..0..1..0..1. .1..1..0..0..0. .0..1..1..1..0

%Y Cf. A302322.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 05 2018